The utility model discloses a down jacket, including the clothing body that has the coat -sleeve, the coat -sleeve includes that surface fabric, inner bag expect in and from the extroversion in in proper order, be equipped with the pocket between surface fabric and the inner bag, the outer axle of coat -sleeve has the oversleeve along its circumference cladding, the oversleeve both ends all can bedismantled and connected in the pocket inner wall, in the time need not using the oversleeve, the oversleeve inlays to be located in the pocket. When need use the oversleeve, wrap up the oversleeve outside the coat -sleeve. Make the spot adhesion on the oversleeve, the cleaning of protective clothes sleeve. In the time need not using the oversleeve, fill in the oversleeve after folding in the pocket can, can not influence down jacket's normal use, and make the down jacket outward appearance can not receive the influence. After using a period, can pull down the oversleeve alone, convenient operation is washd it.